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Sept. 20, 1960 G. DE CHANGY TRANSFER SYSTEM FOR CALCULATING MACHINE 4 Sheets-Sheet 1 Filed Jan. 13, 1956 Sept. 1960 G. DE'CHANGY 2,953,301

TRANSFER SYSTEM FOR CALCULATING MACHINE Filed Jan. 13, 1956 4 Sheets-Sheet 2 Sept. 20, 1960 6. DE CHANGY TRANSFER SYSTEM FOR CALCULATING MACHINE 4 Sheets-Sheet 3 mm am Sept. 20, 1960 G. DE CHANGY TRANSFER SYSTEM FOR CALCULATING MACHINE 4 Sheets-Sheet 4 Filed Jan. 13, 1956 bbaiw M6 :25.

0 Wm Khizm United States Patent TRANSFER SYSTEM FOR CALCULATING MACHINE Gilbert de Changy, Clamart, France, assignor to Electricite de France-Service National-Direction des Etudes et Recherches, Paris, France Filed Jan. 13, 1956, Ser. No. 559,030

Claims priority, application France Jan. 13, 1955 1 Claim. (Cl. 235-438) The present invention relates to an improved transfer system for calculating machine whereby a doubly deferred cascade recording of the transfers combined with the use of a power input may be effected.

For this purpose, the transfer system according to this invention is characterized in that it comprises for each row of units, except for the first one, a transfer block consisting of an adequate number, for example ten, of pinions rotatably fast with oneanother, each pinion having a toothed segment of which the number of teeth increases regularly from the first pinion to the last pinion in the block, i.e. from zero to nine in the decimal system, and a complementary smooth or toothless segment of which the diameter corresponds to the pitch circle of the teeth, an input pinion having teeth in the decimal system which constitutes the input pinion ofa totalizer, this last-mentioned pinion being adapted to co-act with the different pinions. of said block, means adapted upon each transfer actuation of a given order to bring about a relative displacement between the transfer block of the immediately succeeding upper order and the associated input pinion, whereby said associated input pinion will be caused to register with that pinion from the transfer-block which has one tooth more than the pinion- With which it was registering beforehand, and means adapted, subsequent to each partial multiplication, to rotate through a complete. revolution successively each of the said transfer blocks by beginning with the pinion block of the lowest order so as to transmit in cascade the transfer to the associated input pinions of a totalizer.

A power input may be used for bringing about the cascade rotation of the multiplying blocks in the transfer system so that the force required for its operation will be derived from this power input alone.

It is pointed out that in the foregoing and in the following description a pinion having n. teeth is a pinion pertaining to a multiplying block which comprises a toothed segment and a smooth or toothless segment having the same diameter as the pitch circle of the toothed portion; in other Words, not a pinion having actually n teeth, but a pinion of which a complete revolution causes the conjugate pinion to rotate through an angular extent corresponding to 11 units.

Similarly, in the foregoing and in the following description a p-toothed input pinion of a multiplying block is a pinion of which the total number of teeth corresponds to p units, adapted to be locked against rotation by any smooth or toothless segment of anyone conjugate pinion of the multiplying block and driven through the angular extent corresponding to the number of teeth carried by the conjugate pinion.

In order to afford a clearer understanding of the invention and of the manner in which the same is to be carried outv in the practice, reference will. now be made to the attached drawings forming part of this specification and illustrating diagrammatically by way of example one form of embodiment of the invention as applied to a rotary multiplying-divider of the type described in the U8. Patent No. 2,838,236 of June 10, 1958.

In the drawings:

Figure 1 is a diagrammatical view of the assembly;

Figure 2 is a fragmentary diagrammatic view of the assembly taken upon the line II-II of Fig. 1;

Figures 3 to 5 illustrate schematically an arrangement for controlling the actuation of the transfer pinion block, a device for synchronously controlling the diiferent succeeding operations, and a device for the cascade control of transfers, respectively;

Figures 6 to 8 show another form of embodiment of conjugate pinions;

Figure 9 is a complete diagrammatic view of the assembly; and

Figure 10 is a timing diagram corresponding to an operation cycle.

The machine illustrated in the drawings comprises a number of multiplying groups or block of pinions 1, 2, 3 mounted for axial sliding movement on a splined shaft 4 rotatably driven from a pair of pinions 5, 6 of which the latter is adapted to cause the former to rotate through a number of revolutions ranging from Zero to nine, according as the multiplication is effected by a number comprised between 0 and 9.

Each pinion group 1, 2 and 3 corresponding respectively to succeeding orders comprises ten pinions each having a toothed segment the number of teeth of which increases regularly from 0 to 9, according to an arithmetical progression of ratio n from the first to the last pinion of the group, and a complementary toothless segment of a diameter corresponding to the pitch circle of the aforesaid teeth; grooved collars 7, 8, 9, rigid with the groups of pinions 1, 2, 3 are driven from one end of the levers 7a, 8a, 9a pivoted on pins 7b, 8b, 9b, the other end 70, 80, 9c of each lever being adapted to be set by the operator in the position corresponding to the multiplioand figure. As a result, a sliding movement of the pulleys 7, 8, 9 and groups of pinions 1, 2, 3 so that the pinion having the desired number of teeth will mesh with the corresponding input pinions 10, 11, 12 mounted for loose rotation on a common shaft 13. These pinions 10, 11, 12 have 10 n teeth in the decimal system and every n tooth is truncated down to the pitch circle; in other words, if we consider the succession of these teeth on one of the pinions we see nl complete teeth, one truncated tooth, n-1 complete teeth, one truncated tooth, and so forth. In the example illustrated in the drawings the blocks 1, 2, 3, 14, 15, 16 consist of ten-pinion assemblies wherein the number of teeth is respectively 0, 3, 9, 12, 2-7, the rate n of the arithmetical progression being equal to 3. Therefore, in the same example the teeth 10, 11, 12 have 10 3=30 teeth of which every third one is truncated; otherwise stated, if we consider the succession of teeth of these pinions, we find two complete teeth, one truncated tooth, two complete teeth, one truncated tooth, and so forth. Thus, the pinion 10, for instance, may be driven by one pinion of the multiplying group 1 and subsequently locked by virtue of the engagement of one truncated tooth with the complementary toothless segment of the said multiplying pinion.

Ten-pinion transfer blocks 14, 15, 16 similar to the multiplying groups 1, 2, 3 are also slidably mounted on separate sections 17, 18, 19 of splined shafts; each block is rotatably and slidably fast with a grooved collar 20, 21, 22 whereby, through appropriate actuating mechanisms 23, 24, 25 illustrated diagrammatically in Fig. 9, upon each rotation through a complete revolution of one of the input pinions 10; 11, 12 the ten-pinion transfer blocks 14, 15, 16 associated with the input pinion of the immediately succeeding upper order will slide through an axial distance corresponding to the width of one of these pinions, so that the input pinion will register with that pinion from said block which has one tooth more than that with which it registered beforehand.

This displacement may be obtained by means of a tappet 40 rigid with each input pinion 10, 11, 12 and cooperating with other tappets 41 rigid with a sliding rod 42 so that, upon completion of each revolution of the relevant input pinion, an angular displacement of at least one tooth of said pinion will cause the tappet assembly 40, 41 to displace the sliding rod 42. To this end, the rod 42 carries a rack 70 meshing with a spur gear 71 rigid with the bevel pinion 72. The bevel pinion 73 meshing with pinion 72 is rigid with a spur pinion 74 meshing in turn with the rack 75 solid with a rod 76 having a fork-shaped end associated with the collar 20. The gear ratio of rod 42 to rod 76 is so selected that an elementary movement of rod 42 under the control of a tappet 40 determines a longitudinal shift of the tenpinion transfer block 14 which is equal to the width of one of the pinions constituting this block.

Each of the pinions 10, 11, 12 may be in constant meshing engagement with the pinion 26 of the corresponding row of a totalizer and mounted for rocking movement from one extreme position to another, the rocking movement being such that in one of their extreme positions they will mesh with the pinions of one of the ten-pinion groups 1, 2, 3 and in the other extreme position they will mesh with one of the pinions of the ten-pinion groups 14, 15, 16; this rocking movement may be produced by an eccentric 27 mounted on a shaft 65 adapted when rotated through 180 degrees to tilt the stirrup consisting of the arms 67, 67a on which is journalled the shaft 13, and the input pinions 10, 11, 12 carried by this shaft will thus shift from one of their extreme positions to the other.

The device described hereinabove operates as follows:

The input pinions 10, 11, 12 are firstly in meshing engagement with the multiplying groups of pinions 1, 2, 3; the gearing 6, 5 rotates the splined shaft 4 and the multiplying pinion groups 1, 2, 3 carried thereby through a number of revolutions corresponding to the desired multiplication; meanwhile the groups of deferred transfer pinions 14, 15, 16 are not in meshing engagement with the input pinions 10, 11, 12; they are in their inoperative positions, the toothless pinion of each of these groups registering with the relevant input pinion; each time one of these input pinions 10, 11, 12 accomplishes a complete revolution corresponding to the recording of ten units and that a one-unit transfer is to be effected, it causes through the devices 23, 24, 25 the corresponding group of transfer pinions 14, 15, 16 to slide through the axial distance of one pinion width; as a result, it is in succession the pinion having one, two, nine teeth which registers with the relevant input pinion; when the multiplication is completed, the splined shaft 17 carrying the pinion group 14 is rotated through one full revolution after having rocked the shaft 13 carrying all the input pinions 10, 11, 12 so as to disconnect them from the multiplicand pinion groups 1, 2, 3 and to cause them to mesh with the transfer pinion groups 14, 15, 16; thus, the transfer pinion 14 causes the input pinion 11 to rotate through the number of teeth corresponding to the number of transfers previously recorded thereby; then the transfer pinion 15, followed by the transfer pinion 16, etc. up to the last transfer pinion, are rotated through a full revolution.

Consequently, the transfers are thus recorded in cascade and transmitted through the toothed pinions 26 to the totalizer.

Assuming for example a multiplicand 875 to be multiplied by the multiplier 9; the groups of pinions 1, 2, 3 are caused to slide until the five-toothed, seven-toothed and eight-toothed pinions of these groups respectively are in meshing engagement with the input pinions 10, 11, 12; then the splined shaft is given nine turns. As a result, the receiving input pinion 10 makes a forty-five teeth turn, and input pinion 11 makes a sixty-three teeth turn and the input pinion 12 makes a seventy-two teeth turn; the totalizer input pinions will therefore indicate five units, three units, and two units, respectively, and the transfer pinion groups 14, 15 and 16 are axially shifted so as to position the four, six and seven toothed wheel of the respective groups 14, 15 and 16 in alignment with the gears 11, 12 and 28 respectively; after rocking the shaft 13 a complete revolution is imparted to each group of pinions 14, 15, 16; as a result, the pinion group 14 will add four units to the three previously recorded by the pinion 11, and the latter will display 4+3=7 units; the pinion group 15 will add six units to the input pinion 12 and as the latter as already recorded two units, it will display a total of 6+2=8 units; finally, the pinion group 16 will cause the hitherto inoperative input pinion 28 to record seven units; consequently, the total will be 7,875, which is the product of 875 by 9.

As another example of mutiplication, let it be assumed that the multiplicand 989 is to be multiplied by the multiplier 9. The groups of pinions 1, 2, 3 are made to line up in such a way that the nine-tooth, eight-tooth and nine-tooth pinions respectively, are geared to, or engaged with, the receiving pinions 10, 11 and 12. After that, the splined shaft 4 is given nine turns. As a result, the receiving-pinion 10 makes eighty-one tooth turn, the receiving-pinion 11 makes a seventy-two tooth turn, and the receiving-pinion 12 makes an eighty-one tooth turn. The input pinions 10, 11 and 12 of the totalizator therefore register respectively one unit, or whole, two units, and one unit, and the transfer pinions 14, 15, 16 have been unkeyed axially in such a way as to bring the eighttooth, seven-tooth, eight-tooth pinions in place directly opposite to the receiving pinions 11, 12, 28. When shaft 13 has been rotated, each of the groups of pinions 14, 15, 16 in turn is made to effect a complete revolution. In the first place, the group of pinions 14 adds eight units to the two units registered previously by the receiving pinion 11 so that the latter indicates 8 plus 2 equals 0 unit plus a transfer unit. The result is that the group of transfer pinions 15 is axially unkeyed from a supplementary position and that the eight-tooth pinion of this group appears opposite to the receiving-pinion 12. After that, when the group of pinions 15 has made a complete turn, it adds eight units to the unit registered previously by the receiving-pinion 12 so that the latter indicates 8 plus 1 equals 9 units. Finally, the rotation of the group of pinions 16 brings about the addition of eight units to the receiving-pinion 28 which up to then had not registered. The total obtained is therefore 8,901, which is the product of 989 multiplied by 9.

These succeeding synchronized operations may be controlled from a shaft 29 driven from a motor 62 through a one-revolution clutch 63. Thus, one revolution of shaft 29 from 0 to 360 defines a cycle of operation. The shaft 29 carries three pinions 30, 31, 32 each having a toothed segment and a toothless segment; these pinions 30, 31, 32 are in constant meshing engagement with pinions 33, 34, 35 having every other tooth truncated down to the pitch circle; the pinions 30, 31, 32 may have a diameter corresponding to sixty teeth and the pinions 33, 34, 35 a diameter corresponding to eighteen teeth; the pinion 30 may have eighteen teeth followed by a toothless segment corresponding to the missing teeth from the 19th to the 60th; pinion 3], may have two diametrally opposite toothed segments each of nine teeth, corresponding to teeth 21 to 29 and 51 to 59, separated by toothless segment, as shown; finally, pinion 32 may have a toothed segment of eighteen teeth corresponding to teeth 5 31 to 49, the remaining peripheral portion constituting a smooth segment.

Thus, to each complete revolution of the shaft 29 which corresponds to a cycle of operation of from to 360 the following parts accomplish respectively and successively (see Fig. 10): pinion 33 a complete revolution from 0 to 120 of the cycle T, pinion 34 a half-revolution from 120 to 180 of the cycle T+2, pinion 35a complete revolution from 180 to 360 of the cycle T, a pinion 34 a half-revolution from 300 to 360 of the cycle T. The reference symbols T and T:-2 applied to the pinions and shafts indicate that these members accomplish respectively a complete revolution or a half-revolution during the cycle period considered. Pinion 33 may drive in succession the shaft of the multiplying pinion of the rotary multiplying-dividing apparatus illustrated in block form at 64 so that the pinion 5 and splined shaft 4 will accomplish n revolutions for each revolution of the pinion 33, when the multiplicand is multiplied by n. The pinion 34 drives the shaft 65 synchronously through the intermediary of pinions 34a and 65a fast with pinion 34 and shaft 65, respectively; this shaft 65 has also mounted on it the eccentric 27 which is adapted to tilt the receiving or driven pinions 10, 11 and 12 mounted on shaft 13 from one extreme position to the other. The pinion 34 and shaft 65 perform a half-revolution from position 120 to position 180 of the cycle considered, so that pinions 10, 11 and 12 are caused to mesh with the group of pinions 14, 15 and 16, and another half-revolution from position 300 to position 360 of the cycle to bring these pinions 10, 11 and 12 in meshing engagement with the groups of pinions 1, 2 and 3 in view of performing another cycle of operation.

Pinion 35 may drive synchronously through the intermediate pinions 35a and 36a, a shaft 36 having mounted thereon three pinions 37, 38 and 39 of a diameter corresponding to sixty teeth and each comprising a single toothed segment of eighteen teeth corresponding to the teeth 1 to 18, and a smooth or toothless segment corresponding to teeth 19 to 60, the toothed segments being angularly spaced from each other through 120, as shown. The pinions 37, 38 and 39 are in meshing engagement with 18-teeth pinions 43, 44 and 45 of which every other tooth is truncated down to the pitch circle; thus, a complete revolution of the shaft 36 causes the successive rotation through a full revolution of pinions 43, 44, 45, that is (see Fig. pinion 43 from 180 to 220 of the cycle, pinion 44 from 220 to 260 and pinion 45 from 260 to 300. The fact of truncating every other teeth of pinions 43, 44, 45 down to the pitch circle makes it possible to lock these pinions when they have been rotatably driven by the toothed segment of the corresponding driving pinions 37, 38 and 39. Another example of this locking action by a truncated tooth co-acting with a toothless segment is illustrated in Fig. 8; in this case it is evident that the pinion 60 is locked in position by the pinion 52 due to the provision of the truncated tooth between the teeth 58 and 59. These pinions 43, 44 and 45 cause the successive rotations through a complete revolution of the splined shafts 17, 18 and 19 on account of the operative connections provided between pinions 43a and 17a having the same number of teeth, on the one hand, which are rigid with the pinion 43 and splined shaft 17, respectively, and similarly between the pinions 44a and 18a, 45a and 19a, on the other hand. Consequently, the groups of transfer pinions 14, and 16 will successively accomplish a complete revolution and produce doubly-delayed cascade transfers.

Of course the form of embodiment of the invention which has been described hereinabove with reference to the attached drawings is given only by way of example and should not be construed as limiting the spirit and scope of the invention.

Thus, as already set forth hereinabove, the ten-teeth input pinions 10, 11, 12 may be constructed like the pinion 61 shown in Figs. 6 and 7 with its locking teeth 46 adapted to co-act with n-toothed pinions such as pinion 47 of a multiplying block shown in Fig. 6, which has only one tooth 48, and pinion 49 of Fig. 7 which has only two teeth 50. Pinion 47, for example, corresponds to the digit 1 of the multiplicand in one of the groups of pinions 1, 2 and 3. Similarly, pinion 49 may be the pinion corresponding to the digit 2 of the multiplicand in the same groups of pinions.

Again, it is also possible to dissociate the driving and locking functions from each other; for this purpose, as illustrated in Fig. 8, the driving shaft 66 is rigid with the driving pinion 51 and locking cylinder 52, and the driven shaft 57 is rigid with the driving input pinion 53 and locking pinion 60; pinion 51 has only one tooth 54 and pinion 53 has ten teeth 55 adapted to be rotatably driven from the tooth 54; cylinder 52 has a single notch 56 and pinion 60 has twenty teeth of which the addenda of two successive teeth bear against the cylinder 52 and the pinion is thus locked by this cylinder.

Each time the tooth 54 of the driving pinion 51 engages tooth 55 of pinion 53, the rear tooth 58 of. pinion 60 bearing against the locking cylinder 52 may engage the notch 56 so as to become unlocked and rotate until the following tooth 59 will restore the locking condition between these parts.

What I claim is:

A transfer system for calculating machine having a totalizer which comprises for each decimal order except for the unit order a transfer block having a number of pinions rotatably fast with one another, ten in the decimal system, each pinion having a toothed segment of which the number of teeth increases regularly from the first pinion according to an arithmetical progression of ratio to the last pinion, ice. from Zero to 9n, and a complementary toothless segment of a diameter corresponding to the pitch circle of the teeth, an input pinion having 10n teeth in the decimal system and constituting the input pinion of said totalizer, said input pinion comprising successively n1 full teeth followed by one tooth truncated down to the pitch circle, then n-1 full teeth, one tooth truncated, etc., said pinion being adapted to co-act with the different pinions of said block, means adapted, upon each actuation of a transfer of a predetermined order, to control the relative displacement between the transfer block of the immediately succeeding upper order and the associated input pinion, whereby said input pinion will be moved into registering relationship with that pinion from said transfer block which has n teeth more than that with which it registered beforehand, and means adapted, after all of the relative displacements between transfer blocks and their associated input pinions have been effected, to rotate successively through a complete revolution, each of said transfer blocks, beginning with the one of lowermost order so as to transmit in cascade the transfers, if any, to the conjugate input pinions of a totalizer.

References Cited in the file of this patent UNITED STATES PATENTS 

